Blender mesh having random holes and bulges at specific areas
This seems to be due to the subdivision modifier you're using. Subdiv modifiers don't handle complex corner geometries too well, such as this one.
If you can manage to distribute this more evenly, with fewer edges connected that one vertex it should work.
On top of this, you might want to think of remodelling the topology across that front area to some degree, subdiv modifiers give weird outputs when there are varying levels of detail (i.e. big faces in some places, and lots of tiny ones in others).